ColinB
100 W
Alternate title: How can we monitor our battery to prevent it from having an "exciting event?"
Ok, this is hurting my brain, so I appreciate your thoughts. Take the case of a typical 13s4p ebike battery. It looks like the cells are arranged in 4p first, then arranged in series. Each group of 4p cells acts as one battery, and the BMS is monitoring each of the 13 groups. All is well.
What happens when one cell in a 4p group goes bad or gets weak? How does the end user (me) determine there is a bad cell? (And avoid letting the magic smoke out?)
- I assume the cell group would have reduced capacity (by 1/4), so the entire battery capacity would be reduced.
- I don't know if the 4p group would excessively heat up during charging or discharging, causing potential problems? (Because the 3 good cells are supplying the power, or absorbing the charge, for the bad cell?)
What do you think? Thanks for the help.
Ok, this is hurting my brain, so I appreciate your thoughts. Take the case of a typical 13s4p ebike battery. It looks like the cells are arranged in 4p first, then arranged in series. Each group of 4p cells acts as one battery, and the BMS is monitoring each of the 13 groups. All is well.
What happens when one cell in a 4p group goes bad or gets weak? How does the end user (me) determine there is a bad cell? (And avoid letting the magic smoke out?)
- I assume the cell group would have reduced capacity (by 1/4), so the entire battery capacity would be reduced.
- I don't know if the 4p group would excessively heat up during charging or discharging, causing potential problems? (Because the 3 good cells are supplying the power, or absorbing the charge, for the bad cell?)
What do you think? Thanks for the help.